Bicycle handle-bar.



No. 819,474. PATENTED MAY 1, 1906.

B. TULKA.

BICYCLE HANDLE BAR.-

APPLIOATION FILED JUNE 21, 1906.

2 SHEETS-SHEET l.

W 12 5555155.-$111VE%K,

@WMQ,

PATENTED MAY 1, 1906.

B. TULKA. BIGYGLE HANDLE BAR.

APPLICATION FILED JUNE 21, 1905.

2 SHEETS-SHEET 2.

W E12 E55 55 ZMM I UNITED STATES PATENT onrron Specification of LettersPatent.

Patented May 1, 1906.

Applicationfiled June 21,1905. Seria1No.2t6.247.

To all whom it may concern:

Be it known that I, BOHUMIL TULKA, a subject of the Emperor ofAustria-Hungary,

residing at Prague, in the Kingdom of Bohe,

My invention relates to handle-bars for bicycles; and it consists incertain improve ments in handle-bars'of the detachable type, whereby themechanism is strengthened and the o eration of attaching or detachingthe hand e-bars from the head or steering-spindle is greatlyfacilitated.

Referring to the accompanying drawings, Figure 1 is a view showing oneform of the invention, certain parts appearing in section. Fig. 2 is aview like Fig. 1 and of a mechanism the same as that shown in Fig. 1,except for a sight detail. Fig. 3 is a view showing another form of. theinvention, certain parts appearing in section; and Fig. 4 is a plan viewof what is shown in Fig. 3.

In the drawings, 4 is the head or steeringspindle of a bicycle or thelike, and 5 is a reduced extension or stud surmounting said head andhaving a non-circular cross-section;

. 1 is the sleeve portion of a tubular part 2, Figs. 1 and 2, or 3,Figs. 3 and 4, said sleeve portion 1 being adapted to receive and carrythe handle-bars and standing at right angles to the part 2 or 3.

Referring to Figs. 1 and 2, 6'is another tubular part arrangedtelescopically with reference to the tubular part 2 and outside of thesame. The parts 6 and 2 have coincid+ ing openings extendingtransversely through them, in which is received the stud 5 of the head4. 8 is a nut which is screwed onto one of the parts 6 2. In Fig. 1 itis screwed onto part 6 and in Fig. 2 on the part 2, in each instancebearing against the adjoining end of the other part. 11 is a pin whichmay be carried by one of the parts 6 2 and work in longitudinal slot inthe other.

Referring to Figs. 3 and 4, 7 is a tubular part arranged telescopicallyand inside of the tubular part 3, whose portion 1 directly carriesthejihandle-bars. Parts 3 and 7 are formed with coinciding transverseopenings receiving the stud 11 of the head 4, the same as thecorresponding parts in Figs. 1 and 2. 12 is the slot-and-pin arrangementfor guiding these parts longitudinally on each other. '8 is a nut whichis screwed onto part 7 and bears against the adj oinin end of the part3.

In all the figures it wil be observed that manipulation of the nut willcause the parts 2 and 6 or 3 and 7 to move in opposite directions, theeflect of which will be to make them bind on the stud 5 or release thesame, according to the direction in which the nut is turned. I

9, in Figs. 1 and 2, and 10, in Figs. 3 and 4, is simply a lock-nut tohold nut 8 where set.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a bicycle handle-bar, the combination of the head, two membersarranged telescopically and having coinciding transverse openingsreceiving a portion of the head, and means for adjusting said members inopposite directions, whereby to cause themto be clamped securely to thehead, substantially as described.

2. In a bicycle handle-bar, the combina-- I tion of the head, twomembers arranged telescopically and having coinciding transverseopenings receiving a portion of the head, and means for adjusting saidmembers in opposite directions longitudinally, whereby to cause them tobe clamped securely to the head, substantially as described.

3. In a bicycle handle-bar, the combination of the head, two membersarranged telescopically and having coinciding transverse openingsreceiving a portion of the head, and means, directlycarried by one andbearing against the other of said members, for adjusting said members inopposite directions longitudinally, whereby to cause them to be clampedsecurely to said head, substantially as described.

4. In a bicycle handle-bar, the combination of the head, two membersarranged telescopically and having coinciding transverse openingsreceiving a portion of the head, and In testimony whereof I aflix' mysignature ahnut, screyfved onto one amfl beeziring against in presenceof two Witnesses.

t e other 0 said members, or a justing sai members in oppositedirections longitudi- BOHUMIL TULKA nally, whereby to cause them to beclamped Witnesses: securely to said head, substantially as de- ADOLPHFISCHER, scribed. LADSLAR VOJACELY.

